If you have diabetes or are at risk for developing the disease, deciding to commit to fitness can be a real lifesaver. If you aren’t sure where to begin or need a little support getting back on track, here are a few simple starting points from the brand new book Diabetes and Keeping Fit For Dummies.

If you’ve exercised recently (even if inconsistently) it’s pretty easy to figure out where you should start with your workouts. Pick a recent workout that felt somewhat challenging but comfortable. Figure out how long and how hard you worked out. This is your starting point. But what if you haven’t worked out in a while (or ever)? How do you know where to start?